Elastic fastening appliance for outboard motors



Sept. 1, 1936. A LESAGE 2,052,636

ELASTIC FASTENING APPLIANCE FOR OUTBOARD MOTORS Filed Dec. 25, 1935 {5 1? 1'4 1&

Inventor MM W Q WW-Z Patented Sept. 1,1936

PATENT OFFICE ELASTIC rasrnnme APPIJAN CE FOR OUTBOARD MOTORS Alfred Les'age, Schwe lnfnrt, Germany Application December 23, 1938, Serial No. 703,692

' In Germany December 23, 1932 scams. 248-4) The invention relates to the suspension of the driving motor outside the boatby the intermediary of elastic means for anti-vibration effect.

The object of the. invention is so to construct 5 the appliance connecting the motor to the boat as to prevent transmission of shocks or vibrations arising with the working of the motor and A propeller to the boat. Nevertheless the connection between the driving engine and the boat shall be efiective and continuously maintained and particularly any undue relative displacement of the engine and the boat from their right connection is to be avoided, the reaction of the pro- I ,peller must be transmitted to the boat without any sensible loss. On the other hand, the advantage of suppression of vibrations so troublesome to the user of light boats is always aimed at.

' e To attain this object, the attachment of the motor aggregate to the boat is performed with the interposition of elastic means which permit of the motor oscillating in a slight degree in respect to theboat so as to damp the shocks or vibrations which could be transmitted to the heat by a rigid connection. .The elastic intermediary members may be located at any suitable points oi. the fastening attachment of the motor aggregate, which attachment may also conveniently be combined with arrangements by which the propeller can be swung out of the water or the boat steered by means of the motor.

Another object .of the invention is a special arrangement of interposing the elastic members between the'boat and'the motor in a most simple manner giving the user the possibility of con- 3 trolling the driving engine positively.

This will be accomplished by the elastic bodies inserted between rigid'portions of the means carrying the motor aggregate on the boat in such a manner-that they are firmly held in place or 40 gripped, the impulse of the propeller continuously and uniformly acting being safelytransmitted to the boat, whereas sudden or rapid but short changes of the condition, such as shocks and vibrations are absorbed by the bufi'eting bodies. For instancethis purpose can be iulfilled by means of rubber bodies, but in some instances springs or the like which are yieldable in one oi more directions may also be inserted.

One embodiment of the elastic connection for 5 the purpose referred to isrepresented in the the washboard, and supporting a motor unit. The connection between the motor unit and the carrier i2 includes a bearing sleeve ll encircling the carrier i 2 and movable lengthwise therealong. Between said sleeve i1 and the carrier I2 is a 5 bayonet Joint coupling i8, one element of said coupling being connected to the carrier. 12, the, other element being threadedonto one end oi the sleeve i1. Forming part of the motor unit and encircling the sleeve i1 is a housing l4. s 10 Firmly embracing the outside of the sleeve i1 is a pair oi. annular cushioning rings or members i5 and I6 axially spaced along said sleeve and having their outer peripheries engaged between shoulders formed on the housing It and shoul- 15 ders formed by the ends of an interconnecting tubular memberas shown. In order to impart greater resiliency to the cushioning rings 'or members l5 and I6, said rings are formed with recesses such as the recess lBa' or the recess I811. 20

The elements of the bayonet joint clutch i8 are held in interengaging relationship by a spring l9.

.The cushioning rings I 5 and it will take up the shocks and vibrations in all directions, so 5 that they effectively resist both radial and axial strains and vibrations. These-cushioning members may be of various dimensions andmay be unit to a boat, a cylindrical carrier for the motor unit, a bearing sleeve for said carrier, a bayonet joint clutch between said carrier and said sleeve, a pair of annular cushioning members of rubber embracing said sleeve and spaced a substantial 4o distance apart along said bearing sleeve; and means for securing the peripheries of said cushioning members to said motor unit and for housing said peripheries, said means presenting metallic shoulders firmly engaging opposite ends of 45 each of said cushioning members near their pe ripheries, the portions of said cushioning mem bers between said shoulders and said bearing sleeve being free to vibrate laterally, whereby saidcushioning members eflectively resist both radial and axial strains and vibrations.

2. In combination, an outboard motor unit, a cylindrical carrier for said motor unit, a bearing sleeve axially movable on said carrier, a clutch having one element secured to said carrier and 2 aosaese the other element secured to said sleeve, spring respect to said carrier, and including a-clutch 0! means for urging said sleeve axially with respect the type in which two coupling clutch elements to said carrier to effect cooperative interengagemay be engaged or disengaged by the relative ment between said clutch elements, and apair axial movement of said elements, and cushion- 5 of annular cushioning members disposed between ing membersot resilient material for imparting 5 said motor unit and said sleeve encircling said greater resiliency to said connection.

sleeve and spaced a substantial distance apart 4. In a device for attaching an outboard motor along said sleeve, the outer peripheries of said unit to a boat's cylindrical carrier for the motor cushioning members being secured to said motor unit, a connection between saidcarrier and said 1 unit, and said cushioning members being free to motor unit for securing said motor unit against 10 vibrate laterally whereby greater resiliency is rotation with respect to said carrier, and includimparted to the connection between said motor ing a clutch and cushioning members of resilient unit and said cylindrical carrier. material ior imparting greater resiliency to-said 3. In combination, an outboard motor unit, a connection, and spring means io'r urging the ele- 15 carrier for said motor unit, and a connection ments 01 said clutch into cooperative engagement. 15

between said carrier and said motor unit for securing said motor unit'against rotation with ALFRED WE. 

